Multifunctional reinforcing steel bar limiting device for prefabricated shear wall

Abstract

A prefabricated shear wall multifunctional steel bar limiting device comprises a customized mold table, multiple sets of fixed pedestals are symmetrically arranged on the front, back, left and right sides of the edge of the customized mold table in the radial direction, a height adjusting rod is fixed to each fixed pedestal, and a movable pedestal is in sliding fit with the height adjusting rods and is locked through a locking assembly. According to the multifunctional reinforcing steel bar limiting device for the prefabricated shear wall, the horizontal distance between reinforcing steel bars on the same layer can be accurately positioned, the vertical distance between the reinforcing steel bars on the upper layer and the lower layer can be effectively adjusted, and the reinforcing steel bar binding quality and efficiency are improved; in the concrete vibrating process, displacement deformation of the reinforcing steel bars can be effectively limited, the production quality of the pre-supporting shear wall is guaranteed, and multiple purposes, repeated utilization and combined use are achieved.

Description

Technical Field

[0001] This utility model relates to the field of precast shear wall production, and in particular to a multifunctional rebar limiting device for precast shear walls. Background Technology

[0002] As a crucial step in the production of precast shear walls, the precise implementation of the rebar tying process is a core element in ensuring mechanical performance. Currently, the common method for rebar positioning is to drill holes in a limiting template based on the rebar layout requirements in the detailed design drawings. This method requires customized processing of the limiting template, resulting in limited applicability, increased construction costs, low construction efficiency, and significant human error. Furthermore, the already tied rebar cage is prone to displacement and deformation during concrete vibration, hindering subsequent hoisting and alignment. Moreover, rebar displacement can compromise the length of the pre-embedded rebar in the grouting sleeve, creating potential safety hazards for the building's quality. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a multifunctional rebar limiting device for precast shear walls. During the rebar binding process, it can accurately position the horizontal spacing of the rebars in the same layer and effectively adjust the vertical spacing of the rebars in the upper and lower layers, thereby improving the quality and efficiency of rebar binding. During the concrete vibration process, it can effectively limit the displacement and deformation of the rebars, ensuring the quality of precast shear wall production and realizing multi-purpose, reusable, and combined use.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] A multifunctional rebar limiting device for precast shear walls includes a customized formwork platform. The lower end of the customized formwork platform is fixed to the original formwork platform by bolts. Multiple sets of fixed seats are arranged radially symmetrically in all directions on the upper end of the customized formwork platform. Each fixed seat is fixed with a height adjustment rod. The movable seat slides with the height adjustment rod and is locked by a locking assembly.

[0006] The fixed platform includes a first base plate, a first placement groove on one side of the first base plate, and a first limiting plate on the other side of the first base plate; the movable platform includes a second base plate, a second placement groove on one side of the second base plate, and a second limiting plate on the other side of the second base plate; wherein, the first placement groove and the second placement groove position the reinforcing bar; the first limiting plate and the second limiting plate limit the end of the reinforcing bar.

[0007] The customized mold platform is fixed with low-position connecting bolts on both sides along the longitudinal direction. The first base plate of the fixed platform passes through the low-position connecting bolts and is fixed by connecting nuts. The customized mold platform is fixed with high-position connecting bolts on both sides along the transverse direction. The gasket 1.5 and the first base plate of the fixed platform 2 pass through the high-position connecting bolts and are fixed by connecting nuts.

[0008] The height adjustment rod includes an adjustment main rod, on which a groove is provided along the vertical direction, and a scale is provided on one side of the groove.

[0009] A positioning ring is provided on one side of the second base plate of the movable platform, and the positioning ring slides in conjunction with the adjusting rod.

[0010] The locking assembly includes a locking bolt, which is disposed on the positioning ring and passes through a slide groove and is locked by a fastening nut.

[0011] Both the first and second placement slots have grooves of various diameters.

[0012] This utility model provides a multifunctional rebar limiting device for precast shear walls, which has the following technical advantages:

[0013] 1) During the process of reinforcing bar binding, it can accurately locate the horizontal spacing between adjacent reinforcing bars in the same layer, and effectively adjust the vertical spacing between upper and lower layers of reinforcing bars, thereby improving the quality and efficiency of reinforcing bar binding.

[0014] 2) By setting up three different diameter steel bar placement slots, the requirements for arranging various types of steel bars can be met.

[0015] 3) During the concrete vibration process, the movable and fixed platforms effectively limit the displacement and deformation of the reinforcing bars, ensuring the quality of the precast shear wall.

[0016] 4) All components of this device are detachable by bolts, and each component can be removed and reused after the precast concrete shear wall has solidified. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments:

[0018] Figure 1 This is a schematic diagram of the structure of this utility model.

[0019] Figure 2 This is a partial structural schematic diagram of the present invention.

[0020] Figure 3 This is a front view of a fixed base along the longitudinal direction in this utility model.

[0021] Figure 4 This is a front view of a fixed base along the lateral direction in this utility model.

[0022] Figure 5 This is a structural schematic diagram of a fixed base in this utility model.

[0023] Figure 6 This is a front view of the connection between the movable platform and the height adjustment rod in this utility model.

[0024] Figure 7 This is a schematic diagram of the connection between the movable platform and the height adjustment rod in this utility model.

[0025] Figure 8 This is a schematic diagram showing the arrangement of different types of reinforcing bars on the movable platform in this utility model.

[0026] In the diagram: 1. Custom mold platform; 2. Fixed base; 3. Height adjustment rod; 4. Movable base; 5. Horizontal reinforcing bar; 6. Vertical reinforcing bar; 7. Original mold platform; 8. Original template; 1.1. Base; 1.2. Low-position connecting bolt; 1.3. High-position connecting bolt; 1.4. Connecting nut; 1.5. Adjusting shim; 2.1. First base plate; 2.2. First placement groove; 2.3. First limiting plate; 3.1. Adjusting main rod; 3.2. Slide groove; 3.3. Scale; 4.1. Second base plate; 4.2. Second placement groove; 4.3. Second limiting plate; 4.4. Positioning ring; 4.5. Locking bolt; 4.6. Fastening nut. Detailed Implementation

[0027] like Figures 1-2 As shown, a multifunctional rebar limiting device for precast shear walls includes a customized formwork 1. Multiple sets of fixed supports 2 are mirror-symmetrically installed on both sides of the customized formwork 1 along its longitudinal and transverse directions. Transverse rebars 5 are installed on the longitudinal fixed supports 2, and longitudinal rebars 6 are installed on the transverse fixed supports 2. To achieve staggered arrangement of the transverse and longitudinal rebars 5, shims 1.5 are added to the bottom of the fixed supports 2 along the transverse direction during installation, raising the height of the fixed supports 2 in the transverse direction. This ensures that the height of the longitudinal rebars 6 placed on the fixed supports 2 is higher than the height of the transverse rebars 5, achieving staggered arrangement and avoiding interference.

[0028] A height adjustment rod 3 is fixedly connected to the upper end of each fixed base 2. A movable base 4 is slidably connected to the height adjustment rod 3. After the movable base 4 is adjusted to a suitable height, it is locked by a locking assembly. The upper movable base 4 is used to support, position, limit, and adjust the height of the upper transverse steel bars 5 and longitudinal steel bars 6, thereby realizing the adjustment of the vertical spacing between the two layers of steel bars.

[0029] like Figures 3-5As shown, to facilitate the fixing of the fixed base 2, the customized mold platform 1 has upward-protruding low-position connecting bolts 1.2 every 50mm along its longitudinal edge. The fixed base 2 passes through the low-position connecting bolts 1.2 and is then locked in place by connecting nuts 1.4. The customized mold platform 1 also has upward-protruding high-position connecting bolts 1.3 every 50mm along its transverse edge. The length of the high-position connecting bolts 1.3 is greater than that of the low-position connecting bolts 1.2. The gasket 1.5 and the fixed base 2 pass through the high-position connecting bolts 1.3 in sequence and are then locked in place by connecting nuts 1.4. This achieves the connection between the customized mold platform 1 and the fixed base 2.

[0030] The quantity of 1.5 shims here is determined based on the spacing and model requirements of the reinforcing bars in the detailed design drawings.

[0031] like Figures 6-7 As shown, the height adjustment rod 3 includes a height adjustment main rod 3.1, on which a vertically extending groove 3.2 is provided, and a scale 3.3 is provided on one side of the height adjustment main rod 3.1. The vertically sliding movable platform 4 can precisely adjust the vertical spacing between the two layers of reinforcing bars.

[0032] like Figure 5 As shown, the locking assembly includes a locking bolt 4.5 that freely passes through the slide groove 3.2 and the movable platform 4. The locking bolt 4.5 is connected and fastened by a fastening nut 4.6. This ensures that the movable platform 4 locks after sliding to a certain height position.

[0033] like Figure 5 As shown, the fixed base 2 includes a first base plate 2.1, a first placement groove 2.2 on one side of the first base plate 2.1, and a first limiting plate 2.3 on the other side of the first base plate 2.1. Figure 7 As shown, the movable platform 4 includes a second base plate 4.1, a second placement groove 4.2 on one side of the second base plate 4.1, and a second limiting plate 4.3 on the other side of the second base plate 4.1.

[0034] The first limiting plate 2.3 and the second limiting plate 4.3 are used to limit the two ends of the reinforcing bars, which can prevent the reinforcing bars from shifting and deforming during concrete vibration after the reinforcing bars are tied.

[0035] like Figure 8 As shown, both the first placement groove 2.2 and the second placement groove 4.2 are provided with grooves of three different diameters, namely small-sized steel bar a, medium-sized steel bar b, and large-sized steel bar c, to meet the requirements of different steel bar models.

[0036] Compared to the traditional method of drilling and positioning in templates, the advantages of using a multi-functional rebar limiter for rebar positioning are: 1) The rebar spacing is standardized and adjustable according to the building module, which is suitable for different rebar spacing and model arrangements and conforms to the principle of industrialized production; 2) The components are lightweight and compact, easy to operate, and have high construction efficiency; 3) It can be reused, saving materials and reducing carbon emissions.

[0037] The original mold platform 7 and the original template 8 are existing devices, and the original mold platform 7 and the original template 8 are fixed together by bolts.

[0038] Working principle and process:

[0039] 1) such as Figure 1 As shown, the original formwork 8 (precast shear wall formwork) has vertical through slots (after the reinforcement is tied and before pouring, the through slots of the original formwork 8 are sealed with rubber sealing strips), which cannot accurately position the vertical spacing of the reinforcement. Therefore, after the precast shear wall formwork is installed, this device is added to the outside of the formwork along the four sides. By adding shims at the fixed platform 2 in the horizontal direction and not setting shims at the fixed platform 2 in the vertical direction, the lower layer of horizontal and vertical reinforcement is staggered. The vertical spacing of the upper and lower layers of reinforcement is adjusted by adjusting the movable platform with the height adjustment rod, thus completing the function of precise positioning of the reinforcement.

[0040] 2) After the reinforcing bars are tied, concrete pouring and vibration are required. This process will generate significant vibration, which can easily cause the tied reinforcing bars to shift and deform. Both the fixed platform 2 and the movable platform 4 of this device are equipped with reinforcing bar placement grooves and limiting plates to effectively prevent the reinforcing bars from shifting in any direction.

[0041] 3) Because this device is installed on the outside of the pre-supported shear wall formwork, it can be disassembled and recycled multiple times.

Claims

1. A multifunctional rebar limiting device for precast shear walls, characterized in that: The system includes a custom mold platform (1), the lower end of which is fixed to the original mold platform (7) by bolts. Multiple sets of fixed bases (2) are arranged radially symmetrically in all directions on the upper end of the custom mold platform (1). Each fixed base (2) is fixed with a height adjustment rod (3). The movable base (4) slides with the height adjustment rod (3) and is locked by a locking assembly.

2. The multifunctional rebar limiting device for precast shear walls according to claim 1, characterized in that: The fixed platform (2) includes a first base plate (2.1), a first placement groove (2.2) on one side of the first base plate (2.1), and a first limiting plate (2.3) on the other side of the first base plate (2.1); the movable platform (4) includes a second base plate (4.1), a second placement groove (4.2) on one side of the second base plate (4.1), and a second limiting plate (4.3) on the other side of the second base plate (4.1); wherein, the first placement groove (2.2) and the second placement groove (4.2) position the reinforcing bars; the first limiting plate (2.3) and the second limiting plate (4.3) limit the ends of the reinforcing bars.

3. The multifunctional rebar limiting device for precast shear walls according to claim 2, characterized in that: The lower end of the custom mold platform (1) is fixed to the original mold platform (7) by bolts; the upper end of the custom mold platform (1) is fixed with low-position connecting bolts (1.2) on both sides along the longitudinal direction, and the first base plate (2.1) of the fixed platform (2) passes through the low-position connecting bolts (1.2) and is fixed by connecting nuts (1.4); the upper end of the custom mold platform (1) is fixed with high-position connecting bolts (1.3) on both sides along the transverse direction, and the gasket (1.5) and the first base plate (2.1) of the fixed platform (2) pass through the high-position connecting bolts (1.3) and are fixed by connecting nuts (1.4).

4. The multifunctional rebar limiting device for precast shear walls according to claim 3, characterized in that: The height adjustment rod (3) includes an adjustment main rod (3.1), and a slide groove (3.2) is provided on the vertical direction of the adjustment main rod (3.1). A scale (3.3) is provided on one side of the slide groove (3.2).

5. A multifunctional rebar limiting device for precast shear walls according to claim 4, characterized in that: The second base plate (4.1) of the movable platform (4) is provided with a positioning ring (4.4) on one side, and the positioning ring (4.4) slides in conjunction with the adjusting rod (3.1).

6. A multifunctional rebar limiting device for precast shear walls according to claim 5, characterized in that: The locking assembly includes a locking bolt (4.5), which is disposed on the positioning ring (4.4), passes through the slide groove (3.2), and is locked by a fastening nut (4.6).

7. A multifunctional rebar limiting device for precast shear walls according to claim 6, characterized in that: Both the first placement groove (2.2) and the second placement groove (4.2) have grooves of various diameters.

Images